NISSAN TIIDA 2007 Service Repair Manual

MWI-34
< COMPONENT DIAGNOSIS >
AMBIENT SENSOR SIGNAL CIRCUIT
AMBIENT SENSOR SIGNAL CIRCUIT
DescriptionINFOID:0000000001537467
The ambient sensor detects ambient temperature and converts it into a resistance value which is then input
into the combination meter.
NOTE:
On vehicles equipped with auto A/C, the ambient sensor signal is shared with the front air control. The combi-
nation meter is notified of the signal sharing via the auto A/C sense circuit.
Diagnosis ProcedureINFOID:0000000001537468
1.CHECK AMBIENT SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and ambient sensor
connector.
3. Check continuity between combination meter harness connector
M24 (A) terminal 19 and ambient sensor harness connector E60
(B) terminal 2.
4. Check continuity between combination meter harness connector
M24 (A) terminal 19 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair harness or connector.
2.CHECK AMBIENT SENSOR GROUND CIRCUIT
1. Check continuity between combination meter harness connector
M24 (A) terminal 20 and ambient sensor harness connector E60
(B) terminal 1.
2. Check continuity between combination meter harness connector
M24 (A) terminal 20 and ground.
Is the inspection result normal?
YES >>  With auto A/C: GO TO 3
 Without auto A/C: INSPECTION END
NO >> Repair harness or connector.
3.CHECK AUTO A/C SENSE SIGNAL
1. Connect combination meter and ambient sensor connectors.
2. Turn ignition switch ON.
3. Check voltage between combination meter harness connector
M24 terminal 25 and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 419 – 2 : Continuity should exist.
19 – Ground : Continuity should not exist.
AWNIA0169ZZ
20 – 1 : Continuity should exist.
20 – Ground : Continuity should not exist.
AWNIA0170ZZ
25 – Ground : 5V
AWNIA0221ZZ

MWI
AMBIENT SENSOR SIGNAL CIRCUIT
MWI-35
< COMPONENT DIAGNOSIS >
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4.CHECK AUTO A/C SENSE CIRCUIT
With NAVI
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M24 and front air con-
trol connector M86.
3. Check continuity between combination meter harness connector
M24 (A) terminal 25 and front air control harness connector M86
(B) terminal 1.
4. Check continuity between combination meter harness connector
M24 (A) terminal 25 and ground.
Without NAVI
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M24 and front air con-
trol connector M50.
3. Check continuity between combination meter harness connector
M24 (A) terminal 25 and front air control harness connector M50
(B) terminal 3.
4. Check continuity between combination meter harness connector
M24 (A) terminal 25 and ground.
Is the inspection result normal?
YES >> Replace front air control. Refer to VTL-7, "Removal and Installation".
NO >> Repair harness or connector.
Component InspectionINFOID:0000000001537469
Refer to HAC-131, "Ambient Sensor Component Inspection" (without NAVI) or HAC-245, "Ambient Sensor
Component Inspection" (with NAVI). 25 – 1 : Continuity should exist.
25 – Ground : Continuity should not exist.
25 – 3 : Continuity should exist.
25 – Ground : Continuity should not exist.
AWNIA0222ZZ
AWNIA0223ZZ

MWI-36
< ECU DIAGNOSIS >
COMBINATION METER
ECU DIAGNOSIS
COMBINATION METER
Reference ValueINFOID:0000000001374706
TERMINAL LAYOUT
PHYSICAL VALUES
LKIA0698E
Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
1LCAN-H — — —
2PCAN-L — — —
3VVehicle speed signal output
(2-pulse)ONSpeedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)] NOTE:
Maximum voltage may be 5V due to
specifications (connected units).
4OVehicle speed signal output
(8-pulse)ONSpeedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)]NOTE:
Maximum voltage may be 12V due to
specifications (connected units).
6 BR Fuel level sensor signal (+) — — Refer to MWI-29, "
Description".
7 BR Air bag signal ONAir bag warning lamp ON 4
Air bag warning lamp OFF 0
8 P O/D OFF switch ONO/D OFF switch pressed 0
O/D OFF switch released Battery voltage
9OSeat belt buckle switch (driv-
er side)ONUnfastened (ON) 0
Fastened (OFF) Battery voltage
10 SB Parking Brake switch ONParking brake applied 0
Parking brake released Battery voltage
PKIC0642E
PKIC0643E

MWI
COMBINATION METER
MWI-37
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11 LG Brake fluid level switch ONBrake fluid level low 0
Brake fluid level normal Battery voltage
16 VSteering switch (trip comput-
er) signalONPress the steering switch (trip
computer)0
Other than the above 5
19 V Ambient sensor signal ON —
20 BR Ambient sensor ground ON — 0
21
BGround — — 0 22
23
24 V Fuel level sensor ground (-) ON — 0
25 RAuto A/C sense signal (with
auto A/C)ON — 5V
27 G Battery power supply OFF — Battery voltage
28 SB Ignition switch ON or START ON — Battery voltage
30 G Stop lamp switch ONBrake pedal depressed Battery voltage
Brake pedal released 0
31 V A/T N-range input (with A/T) ONTransmission gear selector lever
in N positionBattery voltage
Transmission gear selector lever
other than N position0
32 W A/T P-range input (with A/T) ONTransmission gear selector lever
in P positionBattery voltage
Transmission gear selector lever
other than P position0
33 Y A/T PN output (with A/T) ONTransmission gear selector lever
in P or N position0
Transmission gear selector lever
other than P or N positionBattery voltage
35 BREngine coolant temperature
signal outputONAt idle [after warming up, approx.
80°C (176°F)]
NOTE:
The waveforms vary depending
on engine coolant temperature. Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
JSNIA0014GB
SKIB3651J

MWI-38
< ECU DIAGNOSIS >
COMBINATION METER
36 L Oil level sensor signal ON —Refer to MWI-32, "
Component Inspec-
tion (With Diesel)" or MWI-33, "Compo-
nent Inspection (Without Diesel)".
NOTE:
The measurement cannot be performed
because the signal is only input for a
moment when the ignition switch is
turned ON.
37 O Oil level sensor signal ground ON — 0
38 L Generator ONGenerator voltage low 0
Generator voltage normal Battery voltage Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition

MWI
COMBINATION METER
MWI-39
< ECU DIAGNOSIS >
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Wiring DiagramINFOID:0000000001374707
ALNWA0096GB

MWI-40
< ECU DIAGNOSIS >
COMBINATION METER
ALNWA0097GB

MWI
COMBINATION METER
MWI-41
< ECU DIAGNOSIS >
C
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MB A
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ALNWA0098GB

MWI-42
< ECU DIAGNOSIS >
COMBINATION METER
ALNWA0099GB

MWI
COMBINATION METER
MWI-43
< ECU DIAGNOSIS >
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ALNIA0852GB